WO2022188550A1 - Main and auxiliary alloy-based neodymium-iron-boron magnet material and preparation method therefor - Google Patents

Main and auxiliary alloy-based neodymium-iron-boron magnet material and preparation method therefor Download PDF

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WO2022188550A1
WO2022188550A1 PCT/CN2022/072244 CN2022072244W WO2022188550A1 WO 2022188550 A1 WO2022188550 A1 WO 2022188550A1 CN 2022072244 W CN2022072244 W CN 2022072244W WO 2022188550 A1 WO2022188550 A1 WO 2022188550A1
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mas
raw material
main
alloy raw
auxiliary
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PCT/CN2022/072244
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French (fr)
Chinese (zh)
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韦兴
黄佳莹
汤志辉
黄清芳
蒋志鹏
许德钦
陈大崑
付刚
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福建省长汀金龙稀土有限公司
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Priority to JP2023544205A priority Critical patent/JP2024512183A/en
Priority to KR1020237025822A priority patent/KR20230126733A/en
Priority to EP22766077.6A priority patent/EP4307325A1/en
Publication of WO2022188550A1 publication Critical patent/WO2022188550A1/en

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    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
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    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
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    • H01F1/058—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IVa elements, e.g. Gd2Fe14C
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    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
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Definitions

  • NdFeB has attracted much attention as the permanent magnet with the largest magnetic energy product at room temperature, and is widely used in traction motors, servo motors, main drive motors of new energy vehicles, magnetic components, wind turbines and other fields.
  • the demagnetization resistance of commercial magnets is only 1/4 of the theoretical value (about 71KOe).
  • the anti-demagnetization ability of NdFeB is generally characterized by coercive force, which is greatly affected by the microstructure of NdFeB, and is controlled by two mechanisms, nucleation field and pinning field, dominated by nucleation field. , the way of nucleation field to improve HcJ is to eliminate the reverse domain nucleation point. From a microscopic point of view, there are generally three ways to improve coercivity:
  • the specific method is to absorb Fe in the grain boundary through the main phase containing Nd 6 Fe 13 X, so that the grain boundary phase is transformed into a non-magnetic phase or an antiferromagnetic phase. , at the same time widen the grain boundary; or increase the total rare earth content to increase the volume of the grain boundary phase; through the addition of grain boundary elements such as Cu, Ga, Co, Al, etc., improve the fluidity of the neodymium-rich phase and optimize the grain boundary of the main phase, thereby Repair the main phase defects, reduce the formation of reverse domains, and improve HcJ.
  • the HcJ that such methods can improve is limited, and it is difficult to increase HcJ above 25kOe.
  • the anisotropy field of the main phase is improved by the addition of heavy rare earths, while the reserves of heavy rare earth resources are small and the price is high, which seriously restricts the application of NdFeB magnets in various industries.
  • the heavy rare earth is distributed along the layer outside the main phase by means of double alloying or diffusion, so as to improve the utilization rate of heavy rare earth.
  • the diffusion method cannot be applied to magnets with larger thickness (>15 mm), and the existing double alloy method has limited improvement effect (about 1-1.5 kOe can increase HcJ).
  • the invention provides a raw material composition of a main and auxiliary alloy system NdFeB magnet material, which includes a main alloy raw material and an auxiliary alloy raw material; wherein, the main alloy raw material includes the following components: light rare earth element LR, 10.0-33.0 mas%; LR is selected from one or more of Y, La, Ce, Pr, Nd; heavy rare earth element HR, 0-20.0 mas%; HR is selected from one or more of Gd, Dy, Tb and Ho M, 0.1 ⁇ 5.0mas%; M is selected from one or more of Co, Cu, Al and Ga; X, 0.05 ⁇ 0.7mas%; X is selected from one or more of Zr, Ti and Nb ; B, 0.94-1.1 mas%; the balance is Fe; wherein, mas% refers to the mass percentage of the components in the main alloy raw material;
  • the auxiliary alloy raw material includes the following components: light rare earth element LR, 0-30.0 mas%; LR is Nd and/or Pr; heavy rare earth element HR, 1-80 mas%; HR is Dy and/or Tb; M, 5.0 ⁇ 20.0mas%; M is selected from one or more of Co, Cu, Al and Ga; X, 3.0 ⁇ 12.0mas%; X is selected from one or more of Ti, Zr, Hf, Nb, W and Ta Various; B, 0-0.6 mas%; the balance is Fe; wherein, mas% refers to the mass percentage of the components in the auxiliary alloy raw material;
  • the mass percentage of the auxiliary alloy raw material in the raw material composition of the main and auxiliary alloy-based NdFeB magnet material is 1.0-15.0 mas%.
  • the content of the LR is preferably 25.0-30.0 mas%, such as 25.2 mas%, 29.5 mas% or 30 mas%, mas% refers to the composition in the main alloy raw material. mass percentage in .
  • the content of the Pr is preferably 6.0-7.5 mas%, for example, 6.3 mas% or 7.375 mas%.
  • the mass percentage in the main alloy raw material is preferably 6.0-7.5 mas%, for example, 6.3 mas% or 7.375 mas%.
  • the LR contains Nd and Pr. More preferably, the Nd content is 22.125 mas %, and the Pr content is 7.375 mas %; or, the Nd content is 22.5 mas %, and the Pr content is 7.5 mas %; or, the The content of Nd is 18.9 mas%, and the content of Pr is 6.3 mas%; mas% refers to the mass percentage of components in the main alloy raw material.
  • the content of the HR is preferably 1.0-10.0 mas%, such as 1.5 mas% or 5.3 mas%, and mas% refers to the mass of the components in the main alloy raw material percentage.
  • the content of Dy is preferably 1.0-5.0 mas%, for example, 1.5 mas% or 4.3 mas%.
  • the HR is Dy; the content of Dy is preferably 1.5 mas%.
  • mas% refers to the mass percentage of components in the main alloy raw material.
  • the content of M is preferably 0.5-2.0 mas%, such as 0.88 mas%, 1.5 mas% or 1.65 mas%, mas% refers to the composition in the main alloy The mass percentage of the raw material.
  • the content of Ga is preferably 0.2-0.4 mas%, such as 0.25 mas%, mas% refers to the composition in the main alloy The mass percentage of the raw material.
  • the content of the Al is preferably 0.01-0.1 mas%, such as 0.03 mas%, mas% refers to the composition in the main alloy The mass percentage of the raw material.
  • the content of Cu is preferably 0.1-0.25 mas%, for example, 0.15 mas%, mas% refers to the composition in the main alloy The mass percentage of the raw material.
  • the content of Co is preferably 0.5-1.0 mas%, and mas% refers to the mass percentage of the component in the main alloy raw material .
  • the M includes Ga, Al, Cu and Co; wherein, the content of the Ga is preferably 0.25mas%, and the content of the Al is preferably 0.03mas% , the content of the Cu is preferably 0.1 mas%, and the content of the Co is preferably 0.5 mas%.
  • mas% refers to the mass percentage of components in the main alloy raw material.
  • the content of X is preferably 0.1-0.35 mas%, for example, 0.11 mas% or 0.15 mas%, and mas% refers to the mass of the components in the main alloy raw material percentage.
  • the X is Zr or Ti.
  • the content of B is preferably 0.97-0.99 mas%, such as 0.98 mas%, where mas% refers to the mass percentage of the component in the main alloy raw material.
  • the main alloy raw material includes the following components: Nd, 22.125mas%; Pr, 7.375mas%; Ga, 0.25mas%; Al, 0.03mas%; Cu, 0.1mas%; Co , 0.5mas%; Zr, 0.11mas%; B, 0.98mas%; the balance is Fe; wherein, mas% refers to the mass percentage of components in the main alloy raw material.
  • the main alloy raw material includes the following components: Nd, 22.5mas%; Pr, 7.5mas%; Dy, 1.5mas%; Ga, 0.4mas%; Cu, 0.25mas%; Co , 1.0mas%; Zr, 0.35mas%; B, 0.97mas%; the balance is Fe; wherein, mas% refers to the mass percentage of components in the main alloy raw material.
  • the main alloy raw material includes the following components: Nd, 18.9mas%; Pr, 6.3mas%; Dy, 4.3mas%; Ho, 1.0mas%; Ga, 0.25mas%; Al , 0.1mas%; Cu, 0.15mas%; Co, 1.0mas%; Ti, 0.15mas%; B, 0.97mas%; mass percentage.
  • the total rare earth content TRE in the auxiliary alloy raw material is preferably 35.0-50.0 mas%, more preferably 40.0-45.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material .
  • the content of the LR is preferably 20.0-30.0 mas%, such as 25.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material.
  • the content of the Nd is preferably 10.0-20.0 mas%, such as 15.0 mas%, mas% refers to the component in the auxiliary alloy The mass percentage of the raw material.
  • the content of the Pr is preferably 15.0-25.0 mas%, for example, 20.0 mas%, and mas% refers to the components in the auxiliary alloy.
  • the mass percentage of the raw material is preferably 15.0-25.0 mas%, for example, 20.0 mas%, and mas% refers to the components in the auxiliary alloy.
  • the LR is Nd and Pr, the content of Nd is 15.0 mas%, and the content of Pr is 15.0 mas%; mas% refers to the components in the auxiliary alloy.
  • the mass percentage of the raw material is Nd and Pr, the content of Nd is 15.0 mas%, and the content of Pr is 15.0 mas%; mas% refers to the components in the auxiliary alloy. The mass percentage of the raw material.
  • the content of the HR is preferably 15.0-20.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material.
  • the HR is Tb
  • the content of Tb is 15.0 mas%
  • mas% refers to the mass percentage of the components in the auxiliary alloy raw material.
  • the HR is Dy
  • the content of Dy is 20.0 mas%
  • mas% refers to the mass percentage of the components in the auxiliary alloy raw material.
  • the content of the Ga is preferably 2.0-10.0 mas%, for example, 5.0 mas%, mas% refers to the composition in the auxiliary alloy The mass percentage of the raw material.
  • the content of Co is preferably 10.0-20.0 mas%, such as 15.0 mas%, mas% refers to the composition in the auxiliary alloy The mass percentage of the raw material.
  • the M is Ga and Co; wherein, the content of the Ga is preferably 5.0mas%, the content of the Co is preferably 15.0mas%, and the mas% is Refers to the mass percentage of the components in the auxiliary alloy raw material.
  • the content of X is preferably 4.0-10.0 mas%, such as 4.5 mas% or 5.0 mas%, and mas% refers to the quality of the components in the auxiliary alloy raw material percentage.
  • the X is Zr.
  • the auxiliary alloy raw material includes the following components: Pr, 25.0mas%; Dy, 20.0mas%; Zr, 4.5mas%; B, 0.5mas%; the balance is Fe; wherein, mas% refers to the mass percentage of components in the auxiliary alloy raw material.
  • the mass percentage of the auxiliary alloy raw material in the raw material composition of the main and auxiliary alloy NdFeB magnet material is preferably 2.0-5.0 mas%, for example, 4.0 mas%.
  • the main and auxiliary alloys are raw material compositions of NdFeB magnet materials, which include main alloy raw materials and auxiliary alloy raw materials; wherein, the main alloy raw materials include the following components: Nd, 22.125 mas%; Pr, 7.375mas%; Ga, 0.25mas%; Al, 0.03mas%; Cu, 0.1mas%; Co, 0.5mas%; Zr, 0.11mas%; B, 0.98mas%; the balance is Fe; Wherein, mas% refers to the mass percentage of components in the main alloy raw material; the auxiliary alloy raw material includes the following components: Nd, 15.0mas%; Pr, 15.0mas%; Tb, 15.0mas%; Zr, 10.0 mas%; B, 0.5mas%; the balance is Fe; wherein, mas% refers to the mass percentage of the components in the auxiliary alloy raw materials; the auxiliary alloy raw materials are in the main and auxiliary alloy NdFeB magnet materials The mass percentage in the raw material composition is 4.0 mas%.
  • the main and auxiliary alloy is a raw material composition of NdFeB magnet material, which includes a main alloy raw material and an auxiliary alloy raw material; wherein, the main alloy raw material includes the following components: Nd, 22.5 mas%; Pr, 7.5mas%; Dy, 1.5mas%; Ga, 0.4mas%; Cu, 0.25mas%; Co, 1.0mas%; Zr, 0.35mas%; B, 0.97mas%; the balance is Fe; Wherein, mas% refers to the mass percentage of components in the main alloy raw material; the auxiliary alloy raw material includes the following components: Pr, 25.0mas%; Dy, 20.0mas%; Zr, 4.5mas%; B, 0.5 mas%; the balance is Fe; wherein, mas% refers to the mass percentage of the components in the auxiliary alloy raw materials; the proportion of the auxiliary alloy raw materials in the raw material composition of the main and auxiliary alloy NdFeB magnet materials The mass percentage is 5.0mas%.
  • the present invention also provides a preparation method of a main and auxiliary alloy system NdFeB magnet material, which comprises the following steps:
  • the main alloy and the auxiliary alloy are hydrogen crushed and finely pulverized, respectively, and then mixed, and subjected to forming and sintering treatment to obtain the main and auxiliary alloy NdFeB magnet material.
  • the melting, the casting, the hydrogen crushing, the micro-pulverization, the molding, and the sintering are all conventional operation modes and conditions in the art.
  • the melting can be performed according to conventional melting in the art, for example, melting in a melting furnace.
  • the vacuum degree of the melting furnace is about 5 ⁇ 10 -2 Pa.
  • the melting temperature may be 1300°C to 1600°C, preferably 1500°C to 1550°C.
  • the casting process can be a conventional casting process in the field, such as a thin strip continuous casting method, an ingot casting method, a centrifugal casting method or a rapid quenching method.
  • the process of the hydrogen fragmentation can be a conventional process in the art.
  • the dehydrogenation temperature of the hydrogen fragmentation may be 400-650°C, for example, 500-620°C.
  • the micro-pulverization process can be a conventional micro-pulverization process in the art.
  • the pulverization is preferably carried out in a jet mill.
  • the micro-pulverization is preferably performed in an oxygen-containing atmosphere; the oxygen content in the oxygen-containing atmosphere may be below 80 ppm, preferably below 50 ppm.
  • the particle size of the finely pulverized powder may be 1-20 ⁇ m.
  • the forming conditions can be conventional in the field, such as pressing in a press to form a green body.
  • the magnetic field strength of the press is preferably 0.5T-3.0T, such as 1.0-2.0T.
  • the pressing pressure may be 200 ⁇ 300 MPa, for example, 260 MPa.
  • the pressing time may be conventional in the art, and may be 3-30s, for example, 15s.
  • the sintering conditions may be conventional in the field.
  • the sintering temperature may be 1000-1150°C, preferably 1060-1090°C.
  • the sintering time may be 4-20 hours.
  • the sintering atmosphere is preferably vacuum or argon atmosphere.
  • the present invention also provides a main and auxiliary alloy system NdFeB magnet material, which is prepared according to the preparation method of the main and auxiliary alloy system NdFeB magnet material.
  • the main and auxiliary alloy NdFeB magnet material includes a main phase and a grain boundary phase; wherein, the main phase is a core-shell structure, the core is LR 2 T 14 B, and the shell is HR 2 T 14 B; the grain boundary phase includes neodymium-rich phase, XB 2 phase and R 6 T 13 M phase;
  • R is LR and/or HR
  • LR is selected from one or more of Y, La, Ce, Pr, Nd;
  • HR is selected from one or more of Gd, Dy, Tb and Ho;
  • M is selected from one or more of Cu, Al and Ga;
  • X is selected from one or more of Ti, Zr, Hf, Nb, W and Ta;
  • T Fe and/or Co.
  • LR is Pr and Nd; HR is Tb; M is Cu, Al and Ga; X is Zr; T is Fe and Co.
  • LR is Pr and Nd; HR is Dy; M is Cu and Ga; X is Zr; and T is Fe and Co.
  • LR is Pr and Nd; HR is Dy and Ho; M is Cu, Al and Ga; X is Ti; T is Fe and Co.
  • the main alloy provides LR 2 Fe 14 B main phase and a certain neodymium-rich phase
  • the auxiliary alloy provides HR as a diffusion source.
  • the HR in the auxiliary alloy passes through the molten neodymium-rich phase.
  • the surface layer of the main phase particles diffuses and replaces the LR of the main phase particles, thereby forming a heavy rare earth shell HR 2 Fe 14 B on the surface layer of the main phase.
  • the low content of B in the auxiliary alloy exists in the form of solid solution, reducing the existence of HR 2 T 14 B, making it easier for HR to form a shell layer on the outer edge of the main phase particles during the mixing process, thereby improving the utilization efficiency of HR; at the same time,
  • the low content of B makes the auxiliary alloy flakes more easily broken, which is convenient for the normal operation of the smelting equipment and for the next hydrogen crushing.
  • the X element in the neodymium-rich phase combines with B to form a precipitate XB 2 at high temperature, and the original R-Fe-X and Fe in the Fe-X are released, Thereby, the fluidity of the neodymium-rich phase is improved, and the formation of R 6 T 13 M phase (tetragonal phase, non-magnetic phase or diamagnetic phase) is promoted by M elements, etc., thereby ensuring high remanence (Br) and improving the internal magnetism of the magnet. Intrinsic coercivity (HcJ).
  • the present invention forms a shell layer of heavy rare earth on the NdFeB main phase particles by constructing the main and auxiliary alloy matching methods, combined with a specific raw material ratio, and at the same time improves the fluidity of the Nd-rich phase, so as to ensure high remanence at the same time.
  • the intrinsic coercivity of the magnet is improved.
  • the preparation method of the invention is simple and feasible, and can be applied in engineering.
  • FIG. 1 is a TEM image of the main and auxiliary alloy-based NdFeB magnet material in Example 3 of the present invention.
  • Example 2 is an elemental analysis diagram of the main and auxiliary alloy-based NdFeB magnet material in Example 1 of the present invention.
  • step (1) Hydrogen crushing process: at room temperature, the main alloy flakes and the auxiliary alloy flakes in step (1) are respectively subjected to hydrogen absorption, and then subjected to vacuum dehydrogenation treatment at 500-620° C. to obtain coarsely pulverized powder.
  • Micro-pulverization treatment The coarsely pulverized powder in step (2) is pulverized in an atmosphere with an oxygen content of 50 ppm or less in a jet mill to obtain a finely pulverized powder with an average particle size of 1-20 ⁇ m.
  • Forming process press in a press with a magnetic field strength of 1.0 to 2.0T to form a green body, and then hold it for 15 s under the condition of a pressure of 260 MPa to obtain a formed body.
  • the formed body is sintered at a temperature of 1060-1090°C, and the sintering atmosphere is a vacuum or an argon atmosphere to obtain a NdFeB permanent magnet material.
  • FIG. 1 shows the element distribution of the Ti-rich region in the grain boundary phase. It can be seen that Ti and B elements are closely related. Combining the phase diagram and thermodynamic calculations, it can be known that this phase is TiB 2 , while Zr, Ti, Hf and other elements are of the same family. This phase can be produced in the production of boron.
  • TiB 2 is a high-temperature ceramic phase, which is stable in a large temperature region, thereby purifying B in the grain boundary, making the neodymium-rich phase more fluid, and providing favorable conditions for the formation of tetragonal Nd 6 Fe 13 Ga and other phases. condition.
  • the main and auxiliary alloy NdFeB magnet materials prepared in Examples 1 to 3 were taken, and the magnetic properties were detected by using the PFM14.CN type ultra-high coercivity permanent magnet measuring instrument of China Metrology Institute.
  • Example 2 Br(kGs) 14.3 13.1 12.2 HcJ(kOe) 18.9 24.5 30.5
  • Br refers to remanence; after the permanent magnet material is saturated magnetized, the magnetism that can be maintained by the external magnetic field is removed, which is called remanence. Magnetic polarization coercivity H cJ (intrinsic coercivity).

Abstract

Disclosed in the present invention are a main and auxiliary alloy-based neodymium-iron-boron magnet material and a preparation method therefor. A raw material composition of the main and auxiliary alloy-based neodymium-iron-boron magnet material of the present invention comprises a main alloy raw material and an auxiliary alloy raw material, and the mass percentage of the auxiliary alloy raw material in the raw material composition of the main and auxiliary alloy-based neodymium-iron-boron magnet material is 1.0-15.0 mas%. For the main and auxiliary alloy-based neodymium-iron-boron magnet material prepared by using the raw material composition, the coercivity is increased while high remanence is ensured, and the preparation method therefor can be suitable for engineering application.

Description

主辅合金系钕铁硼磁体材料及其制备方法Main and auxiliary alloy system NdFeB magnet material and preparation method thereof 技术领域technical field
本发明涉及一种主辅合金系钕铁硼磁体材料及其制备方法。The invention relates to a main and auxiliary alloy system NdFeB magnet material and a preparation method thereof.
背景技术Background technique
钕铁硼作为当前常温磁能积最大的永磁体而备受关注，广泛应用于曳引电机、伺服电机、新能源汽车主驱电机、磁性元件、风力发电机等领域。但商用磁体的抗退磁能力仅为理论值(约71KOe)的1/4。钕铁硼的抗退磁能力一般用矫顽力来表征，矫顽力的大小受钕铁硼的微观结构影响大，同时受形核场和钉扎场两种机制控制，以形核场为主导，形核场提高HcJ的途径为消除反向畴形核点。从微观角度，一般有三种提高矫顽力的路径：NdFeB has attracted much attention as the permanent magnet with the largest magnetic energy product at room temperature, and is widely used in traction motors, servo motors, main drive motors of new energy vehicles, magnetic components, wind turbines and other fields. However, the demagnetization resistance of commercial magnets is only 1/4 of the theoretical value (about 71KOe). The anti-demagnetization ability of NdFeB is generally characterized by coercive force, which is greatly affected by the microstructure of NdFeB, and is controlled by two mechanisms, nucleation field and pinning field, dominated by nucleation field. , the way of nucleation field to improve HcJ is to eliminate the reverse domain nucleation point. From a microscopic point of view, there are generally three ways to improve coercivity:
1)提高主相之间的晶界相的去磁耦合能力，具体的做法有通过主相含Nd 6Fe 13X吸收晶界中的Fe，使晶界相向无磁相或反铁磁相转变，同时扩宽晶界；或者提高总稀土量，以提高晶界相体积；通过Cu、Ga、Co、Al等晶界元素的添加，改善富钕相的流动性，优化主相颗粒边界，从而修复主相缺陷，减少反向畴的形成，使HcJ的提高。此类方法提升的HcJ有限，HcJ难以提高至25kOe以上。 1) Improve the demagnetization coupling ability of the grain boundary phase between the main phases. The specific method is to absorb Fe in the grain boundary through the main phase containing Nd 6 Fe 13 X, so that the grain boundary phase is transformed into a non-magnetic phase or an antiferromagnetic phase. , at the same time widen the grain boundary; or increase the total rare earth content to increase the volume of the grain boundary phase; through the addition of grain boundary elements such as Cu, Ga, Co, Al, etc., improve the fluidity of the neodymium-rich phase and optimize the grain boundary of the main phase, thereby Repair the main phase defects, reduce the formation of reverse domains, and improve HcJ. The HcJ that such methods can improve is limited, and it is difficult to increase HcJ above 25kOe.
2)通过细化晶粒减少主相颗粒的反向畴形核点，越接近单畴尺寸，反向畴越难形成；或通过Nd 6Fe 13X等晶界相的形成消融主相颗粒的锐角，使主相晶界变平滑，减少反向形核点。此类方法对HcJ的提升效果较强，薄膜法制备磁体的HcJ可达29kOe，但难以工程化应用。 2 ) Reducing the reverse domain nucleation point of the main phase particles by refining the grains, the closer to the size of the single domain, the more difficult the formation of the reverse domain ; Sharp angles smooth the grain boundaries of the main phase and reduce reverse nucleation points. Such methods have a strong effect on improving HcJ, and the HcJ of magnets prepared by thin film method can reach 29 kOe, but it is difficult to be applied in engineering.
3)通过重稀土添加，使主相各向异性场提高，而重稀土资源储量少、价格高，严重制约了钕铁硼磁体在各行业的应用。通常采双合金或扩散的方式使重稀土在主相外沿层分布，提高重稀土的利用率。但是扩散的方式无法应用在厚度较大(＞15mm)的磁体，而现有的双合金法提升的效果有限(大约可将HcJ提高1～1.5kOe)。3) The anisotropy field of the main phase is improved by the addition of heavy rare earths, while the reserves of heavy rare earth resources are small and the price is high, which seriously restricts the application of NdFeB magnets in various industries. Usually, the heavy rare earth is distributed along the layer outside the main phase by means of double alloying or diffusion, so as to improve the utilization rate of heavy rare earth. However, the diffusion method cannot be applied to magnets with larger thickness (>15 mm), and the existing double alloy method has limited improvement effect (about 1-1.5 kOe can increase HcJ).
发明内容SUMMARY OF THE INVENTION
本发明为了解决现有技术中双合金法制备的钕铁硼磁体矫顽力较低的缺陷，从而提供一种主辅合金系钕铁硼磁体材料及其制备方法。本发明的主辅合金系钕铁硼磁体材料在保证高剩磁的同时提高了矫顽力，且其制备方法可以工程化应用。In order to solve the defect of low coercivity of the NdFeB magnet prepared by the double alloy method in the prior art, the present invention provides a main and auxiliary alloy system NdFeB magnet material and a preparation method thereof. The main and auxiliary alloy system NdFeB magnet material of the present invention improves the coercive force while ensuring high remanence, and the preparation method thereof can be applied in engineering.
为了实现上述目的，本发明采用以下技术方案：In order to achieve the above object, the present invention adopts the following technical solutions:
本发明提供了一种主辅合金系钕铁硼磁体材料的原料组合物，其包括主合金原料和辅合金原料；其中，所述主合金原料包括以下组分：轻稀土元素LR，10.0～33.0mas％；LR选自Y、La、Ce、Pr、Nd的一种或多种；重稀土元素HR，0～20.0mas％；HR选自Gd、Dy、Tb和Ho中的一种或多种；M，0.1～5.0mas％；M选自Co、Cu、Al和Ga中的一种或多种；X，0.05～0.7mas％；X选自Zr、Ti和Nb中的一种或多种；B，0.94～1.1mas％；余量为Fe；其中，mas％是指组分在所述主合金原料中的质量百分比；The invention provides a raw material composition of a main and auxiliary alloy system NdFeB magnet material, which includes a main alloy raw material and an auxiliary alloy raw material; wherein, the main alloy raw material includes the following components: light rare earth element LR, 10.0-33.0 mas%; LR is selected from one or more of Y, La, Ce, Pr, Nd; heavy rare earth element HR, 0-20.0 mas%; HR is selected from one or more of Gd, Dy, Tb and Ho M, 0.1～5.0mas%; M is selected from one or more of Co, Cu, Al and Ga; X, 0.05～0.7mas%; X is selected from one or more of Zr, Ti and Nb ; B, 0.94-1.1 mas%; the balance is Fe; wherein, mas% refers to the mass percentage of the components in the main alloy raw material;
所述辅合金原料包括以下组分：轻稀土元素LR，0～30.0mas％；LR为Nd和/或Pr；重稀土元素HR，1～80mas％；HR为Dy和/或Tb；M，5.0～20.0mas％；M选自Co、Cu、Al和Ga中的一种或多种；X，3.0～12.0mas％；X选自Ti、Zr、Hf、Nb、W和Ta中的一种或多种；B，0～0.6mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比；The auxiliary alloy raw material includes the following components: light rare earth element LR, 0-30.0 mas%; LR is Nd and/or Pr; heavy rare earth element HR, 1-80 mas%; HR is Dy and/or Tb; M, 5.0 ～20.0mas%; M is selected from one or more of Co, Cu, Al and Ga; X, 3.0～12.0mas%; X is selected from one or more of Ti, Zr, Hf, Nb, W and Ta Various; B, 0-0.6 mas%; the balance is Fe; wherein, mas% refers to the mass percentage of the components in the auxiliary alloy raw material;
所述辅合金原料在所述主辅合金系钕铁硼磁体材料的原料组合物中的质量百分比为1.0～15.0mas％。The mass percentage of the auxiliary alloy raw material in the raw material composition of the main and auxiliary alloy-based NdFeB magnet material is 1.0-15.0 mas%.
本发明中，较佳地，所述主合金原料中总稀土含量TRE为26.0～40.0mas％，更佳地为29.0～32.0mas％，例如29.5mas％、30.5mas％或31.5mas％，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, preferably, the total rare earth content TRE in the main alloy raw material is 26.0-40.0mas%, more preferably 29.0-32.0mas%, such as 29.5mas%, 30.5mas% or 31.5mas%, mas% Refers to the mass percentage of the components in the main alloy raw material.
本发明中，所述主合金原料中，所述LR的含量较佳地为25.0～30.0mas％，例如25.2mas％、29.5mas％或30mas％，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, in the main alloy raw material, the content of the LR is preferably 25.0-30.0 mas%, such as 25.2 mas%, 29.5 mas% or 30 mas%, mas% refers to the composition in the main alloy raw material. mass percentage in .
本发明中，所述主合金原料中，当所述LR包含Nd时，所述Nd的含量较佳地为18.9～22.5mas％，例如22.125mas％，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, in the main alloy raw material, when the LR contains Nd, the Nd content is preferably 18.9-22.5 mas%, such as 22.125 mas%, mas% refers to the composition in the main alloy The mass percentage of the raw material.
本发明中，所述主合金原料中，当所述LR包含Pr时，所述Pr的含量较佳地为6.0～7.5mas％，例如6.3mas％或7.375mas％，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, in the main alloy raw material, when the LR contains Pr, the content of the Pr is preferably 6.0-7.5 mas%, for example, 6.3 mas% or 7.375 mas%. The mass percentage in the main alloy raw material.
较佳地，所述主合金原料中，所述LR包含Nd和Pr。更佳地，所述Nd的含量为22.125mas％，所述Pr的含量为7.375mas％；或者，所述Nd的含量为22.5mas％，所述Pr的含量为7.5mas％；或者，所述Nd的含量为18.9mas％，所述Pr的含量为6.3mas％；mas％是指组分在所述主合金原料中的质量百分比。Preferably, in the main alloy raw material, the LR contains Nd and Pr. More preferably, the Nd content is 22.125 mas %, and the Pr content is 7.375 mas %; or, the Nd content is 22.5 mas %, and the Pr content is 7.5 mas %; or, the The content of Nd is 18.9 mas%, and the content of Pr is 6.3 mas%; mas% refers to the mass percentage of components in the main alloy raw material.
本发明中，所述主合金原料中，所述HR的含量较佳地为1.0～10.0mas％，例如1.5mas％或5.3mas％，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, in the main alloy raw material, the content of the HR is preferably 1.0-10.0 mas%, such as 1.5 mas% or 5.3 mas%, and mas% refers to the mass of the components in the main alloy raw material percentage.
本发明中，所述主合金原料中，当所述HR包含Dy时，所述Dy的含量较佳地为1.0～5.0mas％，例如1.5mas％或4.3mas％。较佳地，所述主合金原料中，所述HR为Dy；所述Dy的含量较佳地为1.5mas％。其中，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, in the main alloy raw material, when the HR contains Dy, the content of Dy is preferably 1.0-5.0 mas%, for example, 1.5 mas% or 4.3 mas%. Preferably, in the main alloy raw material, the HR is Dy; the content of Dy is preferably 1.5 mas%. Wherein, mas% refers to the mass percentage of components in the main alloy raw material.
本发明中，所述主合金原料中，当所述HR包含Ho时，所述Ho的含量较佳地为0.5～2.0mas％，例如1.0mas％，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, in the main alloy raw material, when the HR contains Ho, the content of the Ho is preferably 0.5-2.0 mas%, such as 1.0 mas%, mas% refers to the composition in the main alloy The mass percentage of the raw material.
较佳地，所述主合金原料中，所述HR包含Dy和Ho；其中，所述Dy的含量较佳地为4.3mas％，所述Ho的含量较佳地为1.0mas％，mas％是指组分在所述主合金原料中的质量百分比。Preferably, in the main alloy raw material, the HR contains Dy and Ho; wherein, the content of the Dy is preferably 4.3 mas%, the content of the Ho is preferably 1.0 mas%, and the mas% is Refers to the mass percentage of the components in the main alloy raw material.
本发明中，所述主合金原料中，所述M的含量较佳地为0.5～2.0mas％，例如0.88mas％、1.5mas％或1.65mas％，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, in the main alloy raw material, the content of M is preferably 0.5-2.0 mas%, such as 0.88 mas%, 1.5 mas% or 1.65 mas%, mas% refers to the composition in the main alloy The mass percentage of the raw material.
本发明中，所述主合金原料中，当所述M包含Ga时，所述Ga的含量较佳地为0.2～0.4mas％，例如0.25mas％，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, in the main alloy raw material, when the M contains Ga, the content of Ga is preferably 0.2-0.4 mas%, such as 0.25 mas%, mas% refers to the composition in the main alloy The mass percentage of the raw material.
本发明中，所述主合金原料中，当所述M包含Al时，所述Al的含量较佳地为0.01～0.1mas％，例如0.03mas％，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, in the main alloy raw material, when the M contains Al, the content of the Al is preferably 0.01-0.1 mas%, such as 0.03 mas%, mas% refers to the composition in the main alloy The mass percentage of the raw material.
本发明中，所述主合金原料中，当所述M包含Cu时，所述Cu的含量较佳地为0.1～0.25mas％，例如0.15mas％，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, in the main alloy raw material, when the M contains Cu, the content of Cu is preferably 0.1-0.25 mas%, for example, 0.15 mas%, mas% refers to the composition in the main alloy The mass percentage of the raw material.
本发明中，所述主合金原料中，当所述M包含Co时，所述Co的含量较佳地为0.5～1.0mas％，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, in the main alloy raw material, when the M contains Co, the content of Co is preferably 0.5-1.0 mas%, and mas% refers to the mass percentage of the component in the main alloy raw material .
较佳地，所述主合金原料中，所述M包含Ga、Al、Cu和Co；其中，所述Ga的含量较佳地为0.25mas％，所述Al的含量较佳地为0.03mas％，所述Cu的含量较佳地为0.1mas％，所述Co的含量较佳地为0.5mas％。其中，mas％是指组分在所述主合金原料中的质量百分比。Preferably, in the main alloy raw material, the M includes Ga, Al, Cu and Co; wherein, the content of the Ga is preferably 0.25mas%, and the content of the Al is preferably 0.03mas% , the content of the Cu is preferably 0.1 mas%, and the content of the Co is preferably 0.5 mas%. Wherein, mas% refers to the mass percentage of components in the main alloy raw material.
本发明中，所述主合金原料中，所述X的含量较佳地为0.1～0.35mas％，例如0.11mas％或0.15mas％，mas％是指组分在所述主合金原料中的质量百分比。较佳地，所述主合金原料中，所述X为Zr或Ti。In the present invention, in the main alloy raw material, the content of X is preferably 0.1-0.35 mas%, for example, 0.11 mas% or 0.15 mas%, and mas% refers to the mass of the components in the main alloy raw material percentage. Preferably, in the main alloy raw material, the X is Zr or Ti.
本发明中，所述主合金原料中，所述B的含量较佳地为0.97～0.99mas％，例如0.98mas％，mas％是指组分在所述主合金原料中的质量百分比。In the present invention, in the main alloy raw material, the content of B is preferably 0.97-0.99 mas%, such as 0.98 mas%, where mas% refers to the mass percentage of the component in the main alloy raw material.
在一较佳的实施方案中，所述主合金原料包括以下组分：Nd，22.125mas％；Pr，7.375mas％；Ga，0.25mas％；Al，0.03mas％；Cu，0.1mas％；Co，0.5mas％；Zr，0.11mas％；B，0.98mas％；余量为Fe；其中，mas％是指组分在所述主合金原料中的质量百分比。In a preferred embodiment, the main alloy raw material includes the following components: Nd, 22.125mas%; Pr, 7.375mas%; Ga, 0.25mas%; Al, 0.03mas%; Cu, 0.1mas%; Co , 0.5mas%; Zr, 0.11mas%; B, 0.98mas%; the balance is Fe; wherein, mas% refers to the mass percentage of components in the main alloy raw material.
在一较佳的实施方案中，所述主合金原料包括以下组分：Nd，22.5mas％；Pr，7.5mas％；Dy，1.5mas％；Ga，0.4mas％；Cu，0.25mas％；Co，1.0mas％；Zr，0.35mas％；B，0.97mas％；余量为Fe；其中，mas％是指组分在所述主 合金原料中的质量百分比。In a preferred embodiment, the main alloy raw material includes the following components: Nd, 22.5mas%; Pr, 7.5mas%; Dy, 1.5mas%; Ga, 0.4mas%; Cu, 0.25mas%; Co , 1.0mas%; Zr, 0.35mas%; B, 0.97mas%; the balance is Fe; wherein, mas% refers to the mass percentage of components in the main alloy raw material.
在一较佳的实施方案中，所述主合金原料包括以下组分：Nd，18.9mas％；Pr，6.3mas％；Dy，4.3mas％；Ho，1.0mas％；Ga，0.25mas％；Al，0.1mas％；Cu，0.15mas％；Co，1.0mas％；Ti，0.15mas％；B，0.97mas％；余量为Fe；其中，mas％是指组分在所述主合金原料中的质量百分比。In a preferred embodiment, the main alloy raw material includes the following components: Nd, 18.9mas%; Pr, 6.3mas%; Dy, 4.3mas%; Ho, 1.0mas%; Ga, 0.25mas%; Al , 0.1mas%; Cu, 0.15mas%; Co, 1.0mas%; Ti, 0.15mas%; B, 0.97mas%; mass percentage.
本发明中，所述辅合金原料中总稀土含量TRE较佳地为35.0～50.0mas％，更佳地为40.0～45.0mas％，mas％是指组分在所述辅合金原料中的质量百分比。In the present invention, the total rare earth content TRE in the auxiliary alloy raw material is preferably 35.0-50.0 mas%, more preferably 40.0-45.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material .
本发明中，所述辅合金原料中，所述LR的含量较佳地为20.0～30.0mas％，例如25.0mas％，mas％是指组分在所述辅合金原料中的质量百分比。In the present invention, in the auxiliary alloy raw material, the content of the LR is preferably 20.0-30.0 mas%, such as 25.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material.
本发明中，所述辅合金原料中，当所述LR包含Nd时，所述Nd的含量较佳地为10.0～20.0mas％，例如15.0mas％，mas％是指组分在所述辅合金原料中的质量百分比。In the present invention, in the auxiliary alloy raw material, when the LR contains Nd, the content of the Nd is preferably 10.0-20.0 mas%, such as 15.0 mas%, mas% refers to the component in the auxiliary alloy The mass percentage of the raw material.
本发明中，所述辅合金原料中，当所述LR包含Pr时，所述Pr的含量较佳地为15.0～25.0mas％，例如20.0mas％，mas％是指组分在所述辅合金原料中的质量百分比。In the present invention, in the auxiliary alloy raw material, when the LR contains Pr, the content of the Pr is preferably 15.0-25.0 mas%, for example, 20.0 mas%, and mas% refers to the components in the auxiliary alloy. The mass percentage of the raw material.
较佳地，所述辅合金原料中，所述LR为Nd和Pr，所述Nd的含量为15.0mas％，所述Pr的含量为15.0mas％；mas％是指组分在所述辅合金原料中的质量百分比。Preferably, in the auxiliary alloy raw materials, the LR is Nd and Pr, the content of Nd is 15.0 mas%, and the content of Pr is 15.0 mas%; mas% refers to the components in the auxiliary alloy. The mass percentage of the raw material.
本发明中，所述辅合金原料中，所述HR的含量较佳地为15.0～20.0mas％，mas％是指组分在所述辅合金原料中的质量百分比。In the present invention, in the auxiliary alloy raw material, the content of the HR is preferably 15.0-20.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material.
较佳地，所述辅合金原料中，所述HR为Tb，所述Tb的含量为15.0mas％，mas％是指组分在所述辅合金原料中的质量百分比。Preferably, in the auxiliary alloy raw material, the HR is Tb, the content of Tb is 15.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material.
较佳地，所述辅合金原料中，所述HR为Dy，所述Dy的含量为20.0mas％，mas％是指组分在所述辅合金原料中的质量百分比。Preferably, in the auxiliary alloy raw material, the HR is Dy, the content of Dy is 20.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material.
本发明中，所述辅合金原料中，当所述M包含Ga时，所述Ga的含量较佳地为2.0～10.0mas％，例如5.0mas％，mas％是指组分在所述辅合金原料中的质量百分比。In the present invention, in the auxiliary alloy raw material, when the M includes Ga, the content of the Ga is preferably 2.0-10.0 mas%, for example, 5.0 mas%, mas% refers to the composition in the auxiliary alloy The mass percentage of the raw material.
本发明中，所述辅合金原料中，当所述M包含Co时，所述Co的含量较佳地为10.0～20.0mas％，例如15.0mas％，mas％是指组分在所述辅合金原料中的质量百分比。In the present invention, in the auxiliary alloy raw material, when the M contains Co, the content of Co is preferably 10.0-20.0 mas%, such as 15.0 mas%, mas% refers to the composition in the auxiliary alloy The mass percentage of the raw material.
较佳地，所述辅合金原料中，所述M为Ga和Co；其中，所述Ga的含量较佳地为5.0mas％，所述Co的含量较佳地为15.0mas％，mas％是指组分在所述辅合金原料中的质量百分比。Preferably, in the auxiliary alloy raw materials, the M is Ga and Co; wherein, the content of the Ga is preferably 5.0mas%, the content of the Co is preferably 15.0mas%, and the mas% is Refers to the mass percentage of the components in the auxiliary alloy raw material.
本发明中，所述辅合金原料中，所述X的含量较佳地为4.0～10.0mas％，例如4.5mas％或5.0mas％，mas％是指组分在所述辅合金原料中的质量百分比。较佳地，所述辅合金原料中，所述X为Zr。In the present invention, in the auxiliary alloy raw material, the content of X is preferably 4.0-10.0 mas%, such as 4.5 mas% or 5.0 mas%, and mas% refers to the quality of the components in the auxiliary alloy raw material percentage. Preferably, in the auxiliary alloy raw material, the X is Zr.
本发明中，所述辅合金原料中，所述B的含量较佳地为0.3～0.6mas％，例如0.4mas％或0.5mas％，mas％是指组分在所述辅合金原料中的质量百分比。In the present invention, in the auxiliary alloy raw material, the content of the B is preferably 0.3-0.6 mas%, such as 0.4 mas% or 0.5 mas%, and mas% refers to the quality of the components in the auxiliary alloy raw material percentage.
在一较佳的实施方案中，所述辅合金原料包括以下组分：Nd，15.0mas％；Pr，15.0mas％；Tb，15.0mas％；Zr，10.0mas％；B，0.5mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比。In a preferred embodiment, the auxiliary alloy raw material includes the following components: Nd, 15.0mas%; Pr, 15.0mas%; Tb, 15.0mas%; Zr, 10.0mas%; B, 0.5mas%; The amount is Fe; wherein, mas% refers to the mass percentage of the component in the auxiliary alloy raw material.
在一较佳的实施方案中，所述辅合金原料包括以下组分：Pr，25.0mas％；Dy，20.0mas％；Zr，4.5mas％；B，0.5mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比。In a preferred embodiment, the auxiliary alloy raw material includes the following components: Pr, 25.0mas%; Dy, 20.0mas%; Zr, 4.5mas%; B, 0.5mas%; the balance is Fe; wherein, mas% refers to the mass percentage of components in the auxiliary alloy raw material.
在一较佳的实施方案中，所述辅合金原料包括以下组分：Pr，20.0mas％；Dy，20.0mas％；Ga，5.0mas％；Co，15.0mas％；Zr，5.0mas％；B，0.4mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比。In a preferred embodiment, the auxiliary alloy raw material includes the following components: Pr, 20.0mas%; Dy, 20.0mas%; Ga, 5.0mas%; Co, 15.0mas%; Zr, 5.0mas%; B , 0.4 mas%; the balance is Fe; wherein, mas% refers to the mass percentage of the components in the auxiliary alloy raw material.
本发明中，所述辅合金原料在所述主辅合金系钕铁硼磁体材料的原料组合物中的质量百分比较佳地为2.0～5.0mas％，例如4.0mas％。In the present invention, the mass percentage of the auxiliary alloy raw material in the raw material composition of the main and auxiliary alloy NdFeB magnet material is preferably 2.0-5.0 mas%, for example, 4.0 mas%.
在一更佳的实施方案中，所述主辅合金系钕铁硼磁体材料的原料组合物，其包括主合金原料和辅合金原料；其中，所述主合金原料包括以下组分：Nd，22.125mas％；Pr，7.375mas％；Ga，0.25mas％；Al，0.03mas％；Cu，0.1mas％；Co，0.5mas％；Zr，0.11mas％；B，0.98mas％；余量为Fe；其中，mas％是 指组分在所述主合金原料中的质量百分比；所述辅合金原料包括以下组分：Nd，15.0mas％；Pr，15.0mas％；Tb，15.0mas％；Zr，10.0mas％；B，0.5mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比；所述辅合金原料在所述主辅合金系钕铁硼磁体材料的原料组合物中的质量百分比为4.0mas％。In a more preferred embodiment, the main and auxiliary alloys are raw material compositions of NdFeB magnet materials, which include main alloy raw materials and auxiliary alloy raw materials; wherein, the main alloy raw materials include the following components: Nd, 22.125 mas%; Pr, 7.375mas%; Ga, 0.25mas%; Al, 0.03mas%; Cu, 0.1mas%; Co, 0.5mas%; Zr, 0.11mas%; B, 0.98mas%; the balance is Fe; Wherein, mas% refers to the mass percentage of components in the main alloy raw material; the auxiliary alloy raw material includes the following components: Nd, 15.0mas%; Pr, 15.0mas%; Tb, 15.0mas%; Zr, 10.0 mas%; B, 0.5mas%; the balance is Fe; wherein, mas% refers to the mass percentage of the components in the auxiliary alloy raw materials; the auxiliary alloy raw materials are in the main and auxiliary alloy NdFeB magnet materials The mass percentage in the raw material composition is 4.0 mas%.
在一更佳的实施方案中，所述主辅合金系钕铁硼磁体材料的原料组合物，其包括主合金原料和辅合金原料；其中，所述主合金原料包括以下组分：Nd，22.5mas％；Pr，7.5mas％；Dy，1.5mas％；Ga，0.4mas％；Cu，0.25mas％；Co，1.0mas％；Zr，0.35mas％；B，0.97mas％；余量为Fe；其中，mas％是指组分在所述主合金原料中的质量百分比；所述辅合金原料包括以下组分：Pr，25.0mas％；Dy，20.0mas％；Zr，4.5mas％；B，0.5mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比；所述辅合金原料在所述主辅合金系钕铁硼磁体材料的原料组合物中的质量百分比为5.0mas％。In a more preferred embodiment, the main and auxiliary alloy is a raw material composition of NdFeB magnet material, which includes a main alloy raw material and an auxiliary alloy raw material; wherein, the main alloy raw material includes the following components: Nd, 22.5 mas%; Pr, 7.5mas%; Dy, 1.5mas%; Ga, 0.4mas%; Cu, 0.25mas%; Co, 1.0mas%; Zr, 0.35mas%; B, 0.97mas%; the balance is Fe; Wherein, mas% refers to the mass percentage of components in the main alloy raw material; the auxiliary alloy raw material includes the following components: Pr, 25.0mas%; Dy, 20.0mas%; Zr, 4.5mas%; B, 0.5 mas%; the balance is Fe; wherein, mas% refers to the mass percentage of the components in the auxiliary alloy raw materials; the proportion of the auxiliary alloy raw materials in the raw material composition of the main and auxiliary alloy NdFeB magnet materials The mass percentage is 5.0mas%.
在一更佳的实施方案中，所述主辅合金系钕铁硼磁体材料的原料组合物，其包括主合金原料和辅合金原料；其中，所述主合金原料包括以下组分：Nd，18.9mas％；Pr，6.3mas％；Dy，4.3mas％；Ho，1.0mas％；Ga，0.25mas％；Al，0.1mas％；Cu，0.15mas％；Co，1.0mas％；Zr，0.2mas％；B，0.97mas％；余量为Fe；其中，mas％是指组分在所述主合金原料中的质量百分比；所述辅合金原料包括以下组分：Pr，20.0mas％；Dy，20.0mas％；Ga，5.0mas％；Co，15.0mas％；Zr，5.0mas％；B，0.4mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比；所述辅合金原料在所述主辅合金系钕铁硼磁体材料的原料组合物中的质量百分比为4.0mas％。In a more preferred embodiment, the main and auxiliary alloy is a raw material composition of NdFeB magnet material, which includes a main alloy raw material and an auxiliary alloy raw material; wherein, the main alloy raw material includes the following components: Nd, 18.9 mas%; Pr, 6.3mas%; Dy, 4.3mas%; Ho, 1.0mas%; Ga, 0.25mas%; Al, 0.1mas%; Cu, 0.15mas%; Co, 1.0mas%; Zr, 0.2mas% ; B, 0.97mas%; the balance is Fe; wherein, mas% refers to the mass percentage of components in the main alloy raw material; the auxiliary alloy raw material includes the following components: Pr, 20.0mas%; Dy, 20.0 mas%; Ga, 5.0mas%; Co, 15.0mas%; Zr, 5.0mas%; B, 0.4mas%; the balance is Fe; wherein, mas% refers to the mass percentage of components in the auxiliary alloy raw material ; The mass percentage of the auxiliary alloy raw material in the raw material composition of the main and auxiliary alloy NdFeB magnet material is 4.0 mas%.
本发明还提供一种主辅合金系钕铁硼磁体材料的制备方法，其包括以下步骤：The present invention also provides a preparation method of a main and auxiliary alloy system NdFeB magnet material, which comprises the following steps:
S1、将所述的主辅合金系钕铁硼磁体材料的原料组合物中的所述主合金原料和所述辅合金原料分别熔融后铸造，分别得主合金和辅合金；S1, the main alloy raw material and the auxiliary alloy raw material in the raw material composition of the main and auxiliary alloy system NdFeB magnet materials are respectively melted and cast, respectively, to obtain the main alloy and the auxiliary alloy;
S2、将所述主合金和所述辅合金分别氢破碎和微粉碎后混合，进行成型和烧结处理，即得所述主辅合金系钕铁硼磁体材料。S2. The main alloy and the auxiliary alloy are hydrogen crushed and finely pulverized, respectively, and then mixed, and subjected to forming and sintering treatment to obtain the main and auxiliary alloy NdFeB magnet material.
本发明中，所述熔融、所述铸造、所述氢破碎、所述微粉碎、所述成型、以及所述烧结均为本领域常规操作方式和条件。In the present invention, the melting, the casting, the hydrogen crushing, the micro-pulverization, the molding, and the sintering are all conventional operation modes and conditions in the art.
本发明中，所述熔融可按本领域常规的熔融，例如，在熔炼炉中熔炼即可。所述熔炼炉的真空度约为5×10 -2Pa。所述熔炼的温度可为1300℃～1600℃，较佳地为1500℃～1550℃。 In the present invention, the melting can be performed according to conventional melting in the art, for example, melting in a melting furnace. The vacuum degree of the melting furnace is about 5×10 -2 Pa. The melting temperature may be 1300°C to 1600°C, preferably 1500°C to 1550°C.
本发明中，所述铸造的工艺可为本领域常规的铸造工艺，例如薄带连铸法、铸锭法、离心铸造法或快淬法。In the present invention, the casting process can be a conventional casting process in the field, such as a thin strip continuous casting method, an ingot casting method, a centrifugal casting method or a rapid quenching method.
本发明中，所述氢破碎的工艺可为本领域常规的工艺。所述氢破碎的脱氢温度可为400℃～650℃，例如500～620℃。In the present invention, the process of the hydrogen fragmentation can be a conventional process in the art. The dehydrogenation temperature of the hydrogen fragmentation may be 400-650°C, for example, 500-620°C.
本发明中，所述微粉碎的工艺可为本领域常规的微粉碎工艺。所述微粉碎较佳地在气流磨中进行。所述微粉碎较佳地在含氧气氛下进行；所述含氧气氛中所述氧含量可为80ppm以下，较佳地为50ppm以下。所述微粉碎后的粉末粒径可为1～20μm。In the present invention, the micro-pulverization process can be a conventional micro-pulverization process in the art. The pulverization is preferably carried out in a jet mill. The micro-pulverization is preferably performed in an oxygen-containing atmosphere; the oxygen content in the oxygen-containing atmosphere may be below 80 ppm, preferably below 50 ppm. The particle size of the finely pulverized powder may be 1-20 μm.
本发明中，所述成型的条件可为本领域常规，例如在压机中压制成为生坯。所述压机的磁场强度较佳地为0.5T～3.0T，例如1.0～2.0T。所述压制的压力可为200～300MPa，例如260MPa。所述压制的时间可为本领域常规，可为3～30s，例如15s。In the present invention, the forming conditions can be conventional in the field, such as pressing in a press to form a green body. The magnetic field strength of the press is preferably 0.5T-3.0T, such as 1.0-2.0T. The pressing pressure may be 200˜300 MPa, for example, 260 MPa. The pressing time may be conventional in the art, and may be 3-30s, for example, 15s.
本发明中，所述烧结的条件可为本领域常规。所述烧结的温度可为1000℃～1150℃，较佳地为1060～1090℃。所述烧结的时间可为4～20小时。所述烧结的气氛较佳地为真空或氩气气氛。In the present invention, the sintering conditions may be conventional in the field. The sintering temperature may be 1000-1150°C, preferably 1060-1090°C. The sintering time may be 4-20 hours. The sintering atmosphere is preferably vacuum or argon atmosphere.
本发明还提供一种主辅合金系钕铁硼磁体材料，其根据所述主辅合金系钕铁硼磁体材料的制备方法制备得到。The present invention also provides a main and auxiliary alloy system NdFeB magnet material, which is prepared according to the preparation method of the main and auxiliary alloy system NdFeB magnet material.
本发明中，所述主辅合金系钕铁硼磁体材料包括主相和晶界相；其中，所述主相为核壳结构，所述核为LR 2T 14B，所述壳为HR 2T 14B；所述晶界相包括富钕相、XB 2相和R 6T 13M相； In the present invention, the main and auxiliary alloy NdFeB magnet material includes a main phase and a grain boundary phase; wherein, the main phase is a core-shell structure, the core is LR 2 T 14 B, and the shell is HR 2 T 14 B; the grain boundary phase includes neodymium-rich phase, XB 2 phase and R 6 T 13 M phase;
其中，R为LR和/或HR；where R is LR and/or HR;
LR选自Y、La、Ce、Pr、Nd的一种或多种；LR is selected from one or more of Y, La, Ce, Pr, Nd;
HR选自Gd、Dy、Tb和Ho中的一种或多种；HR is selected from one or more of Gd, Dy, Tb and Ho;
M选自Cu、Al和Ga中的一种或多种；M is selected from one or more of Cu, Al and Ga;
X选自Ti、Zr、Hf、Nb、W和Ta中的一种或多种；X is selected from one or more of Ti, Zr, Hf, Nb, W and Ta;
T为Fe和/或Co。T is Fe and/or Co.
较佳地，所述主辅合金系钕铁硼磁体材料中，LR为Pr和Nd；HR为Tb；M为Cu、Al和Ga；X为Zr；T为Fe和Co。Preferably, in the main and auxiliary alloy NdFeB magnet materials, LR is Pr and Nd; HR is Tb; M is Cu, Al and Ga; X is Zr; T is Fe and Co.
较佳地，所述主辅合金系钕铁硼磁体材料中，LR为Pr和Nd；HR为Dy；M为Cu和Ga；X为Zr；T为Fe和Co。Preferably, in the main and auxiliary alloy NdFeB magnet materials, LR is Pr and Nd; HR is Dy; M is Cu and Ga; X is Zr; and T is Fe and Co.
较佳地，所述主辅合金系钕铁硼磁体材料中，LR为Pr和Nd；HR为Dy和Ho；M为Cu、Al和Ga；X为Ti；T为Fe和Co。Preferably, in the main and auxiliary alloy NdFeB magnet materials, LR is Pr and Nd; HR is Dy and Ho; M is Cu, Al and Ga; X is Ti; T is Fe and Co.
本发明中，所述主合金提供LR 2Fe 14B主相以及一定的富钕相，而辅合金提供HR作为扩散源，在烧结的过程中所述辅合金中的HR通过熔融的富钕相向主相颗粒表层扩散，替代主相颗粒的LR，从而在主相表层形成重稀土壳层HR 2Fe 14B。所述辅合金中低含量的B以固溶体的方式存在，减少HR 2T 14B的存在，使混合过程中HR更易在主相颗粒外沿形成壳层，进而提高了HR的利用效率；同时，低含量B使得辅合金片更易破碎，便于熔炼设备的正常运行，便于下一步的氢破碎。在所述主合金和所述辅混合后热处理，在高温下富钕相中的X元素与B结合形成沉淀XB 2，原有的R-Fe-X及Fe-X中的Fe被释放出来，从而提高富钕相的流动性，促进了M元素等形成R 6T 13M相(四方相，无磁相或反磁相)，从而在保证高剩磁(Br)的同时提高了磁体的内禀矫顽力(HcJ)。 In the present invention, the main alloy provides LR 2 Fe 14 B main phase and a certain neodymium-rich phase, and the auxiliary alloy provides HR as a diffusion source. During the sintering process, the HR in the auxiliary alloy passes through the molten neodymium-rich phase. The surface layer of the main phase particles diffuses and replaces the LR of the main phase particles, thereby forming a heavy rare earth shell HR 2 Fe 14 B on the surface layer of the main phase. The low content of B in the auxiliary alloy exists in the form of solid solution, reducing the existence of HR 2 T 14 B, making it easier for HR to form a shell layer on the outer edge of the main phase particles during the mixing process, thereby improving the utilization efficiency of HR; at the same time, The low content of B makes the auxiliary alloy flakes more easily broken, which is convenient for the normal operation of the smelting equipment and for the next hydrogen crushing. After the main alloy and the auxiliary are mixed and heat treated, the X element in the neodymium-rich phase combines with B to form a precipitate XB 2 at high temperature, and the original R-Fe-X and Fe in the Fe-X are released, Thereby, the fluidity of the neodymium-rich phase is improved, and the formation of R 6 T 13 M phase (tetragonal phase, non-magnetic phase or diamagnetic phase) is promoted by M elements, etc., thereby ensuring high remanence (Br) and improving the internal magnetism of the magnet. Intrinsic coercivity (HcJ).
在符合本领域常识的基础上，上述各优选条件，可任意组合，即得本发明各较佳实例。On the basis of conforming to common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain preferred examples of the present invention.
本发明所用试剂和原料均市售可得。The reagents and raw materials used in the present invention are all commercially available.
本发明的积极进步效果在于：The positive progressive effect of the present invention is:
本发明通过构建主辅合金搭配的方式，结合特定的原料配比，在钕铁硼主相颗粒形成重稀土的壳层，同时提高了富钕相的流动性，从而在保证高剩磁的同时提高了磁体的内禀矫顽力。本发明的制备方法简单易行，可以工程化应用。The present invention forms a shell layer of heavy rare earth on the NdFeB main phase particles by constructing the main and auxiliary alloy matching methods, combined with a specific raw material ratio, and at the same time improves the fluidity of the Nd-rich phase, so as to ensure high remanence at the same time. The intrinsic coercivity of the magnet is improved. The preparation method of the invention is simple and feasible, and can be applied in engineering.
附图说明Description of drawings
图1为本发明实施例3的主辅合金系钕铁硼磁体材料的TEM图。FIG. 1 is a TEM image of the main and auxiliary alloy-based NdFeB magnet material in Example 3 of the present invention.
图2为本发明实施例1的主辅合金系钕铁硼磁体材料的元素分析图。2 is an elemental analysis diagram of the main and auxiliary alloy-based NdFeB magnet material in Example 1 of the present invention.
具体实施方式Detailed ways
下面通过实施例的方式进一步说明本发明，但并不因此将本发明限制在所述的实施例范围之中。下列实施例中未注明具体条件的实验方法，按照常规方法和条件，或按照商品说明书选择。The present invention is further described below by way of examples, but the present invention is not limited to the scope of the described examples. The experimental methods that do not specify specific conditions in the following examples are selected according to conventional methods and conditions, or according to the product description.
实施例1～3Examples 1 to 3
(1)铸造过程：按下表1中实施例1～3所示的配比，将主辅合金系钕铁硼磁体材料的原料组合物中的主合金原料和辅合金原料分别放入真空熔炼炉在约5×10 -2Pa的真空中以1500～1550℃的温度分别进行真空熔炼；之后通过薄带连铸法将熔炼所得的熔融液分别进行铸造，制得主合金片和辅合金片。 (1) Casting process: the proportions shown in Examples 1 to 3 in Table 1 below, the main alloy raw materials and the auxiliary alloy raw materials in the raw material composition of the main and auxiliary alloy NdFeB magnet materials are respectively put into vacuum melting The furnace is vacuum smelted at a temperature of 1500-1550 ℃ in a vacuum of about 5×10 -2 Pa; then the melt obtained by the smelting is cast separately by the thin strip continuous casting method to obtain the main alloy sheet and the auxiliary alloy sheet.
(2)氢破碎过程：室温下，分别将步骤(1)中的主合金片和辅合金片进行吸氢，然后在500～620℃下进行真空脱氢处理，即得粗粉碎粉末。(2) Hydrogen crushing process: at room temperature, the main alloy flakes and the auxiliary alloy flakes in step (1) are respectively subjected to hydrogen absorption, and then subjected to vacuum dehydrogenation treatment at 500-620° C. to obtain coarsely pulverized powder.
(3)微粉碎处理：在气流磨中对步骤(2)中的粗粉碎粉末在50ppm以下的氧含量的气氛下进行微粉碎，即得到平均粒径为1～20μm的微粉碎粉末。(3) Micro-pulverization treatment: The coarsely pulverized powder in step (2) is pulverized in an atmosphere with an oxygen content of 50 ppm or less in a jet mill to obtain a finely pulverized powder with an average particle size of 1-20 μm.
(4)成型过程：在磁场强度1.0～2.0T压机中压制成为生坯，之后在压力为260MPa的条件下保持15s，即得成型体。(4) Forming process: press in a press with a magnetic field strength of 1.0 to 2.0T to form a green body, and then hold it for 15 s under the condition of a pressure of 260 MPa to obtain a formed body.
(5)烧结过程：将成型体在1060～1090℃的温度下烧结，烧结气氛为真 空或氩气气氛，即得钕铁硼永磁材料。(5) Sintering process: the formed body is sintered at a temperature of 1060-1090°C, and the sintering atmosphere is a vacuum or an argon atmosphere to obtain a NdFeB permanent magnet material.
表1主辅合金系钕铁硼磁体材料的原料组合物的组分和含量(mas％)Table 1 Composition and content (mas%) of raw material composition of main and auxiliary alloy system NdFeB magnet material
Figure PCTCN2022072244-appb-000001
Figure PCTCN2022072244-appb-000001
其中，“/”表示不含该组分。Wherein, "/" means that the component is not included.
效果实施例Effect Example
(1)透射电子显微镜(TEM)测试(1) Transmission electron microscope (TEM) test
取实施例3制得的主辅合金系钕铁硼磁体材料，利用TEM观察磁体材料的相结构，结果如图1所示。图1显示了晶界相中富Ti区的元素分布，可知Ti与B元素紧密相关，结合相图及热力学计算，可知此相为TiB 2，而Zr、Ti、Hf等为同族元素，在钕铁硼的生产中均可生产此相。TiB 2为高温陶瓷相，在较大的温区内保持稳定，从而净化了晶界中的B，使富钕相流动性更好，并为四方相Nd 6Fe 13Ga等相的生成提供有利条件。 The main and auxiliary alloy NdFeB magnet material obtained in Example 3 was taken, and the phase structure of the magnet material was observed by TEM, and the results were shown in FIG. 1 . Figure 1 shows the element distribution of the Ti-rich region in the grain boundary phase. It can be seen that Ti and B elements are closely related. Combining the phase diagram and thermodynamic calculations, it can be known that this phase is TiB 2 , while Zr, Ti, Hf and other elements are of the same family. This phase can be produced in the production of boron. TiB 2 is a high-temperature ceramic phase, which is stable in a large temperature region, thereby purifying B in the grain boundary, making the neodymium-rich phase more fluid, and providing favorable conditions for the formation of tetragonal Nd 6 Fe 13 Ga and other phases. condition.
(2)磁性能测试(2) Magnetic performance test
取实施例1～3制得的主辅合金系钕铁硼磁体材料，使用中国计量院的PFM14.CN型超高矫顽力永磁测量仪进行磁性能检测。The main and auxiliary alloy NdFeB magnet materials prepared in Examples 1 to 3 were taken, and the magnetic properties were detected by using the PFM14.CN type ultra-high coercivity permanent magnet measuring instrument of China Metrology Institute.
表2主辅合金系钕铁硼磁体材料的磁性能Table 2 Magnetic properties of main and auxiliary alloy NdFeB magnet materials
编号Numbering 实施例1Example 1 实施例2Example 2 实施例3Example 3
Br(kGs)Br(kGs) 14.314.3 13.113.1 12.212.2
HcJ(kOe)HcJ(kOe) 18.918.9 24.524.5 30.530.5
“B r”是指剩磁；永磁材料经过饱和磁化后，撤去外磁场所能保持的磁性，称为剩磁。磁极化强度矫顽力H cJ(内禀矫顽力)。 " Br " refers to remanence; after the permanent magnet material is saturated magnetized, the magnetism that can be maintained by the external magnetic field is removed, which is called remanence. Magnetic polarization coercivity H cJ (intrinsic coercivity).
(3)FE-EPMA测试：(3) FE-EPMA test:
取实施例1制得的主辅合金系钕铁硼磁体材料，由FE-EPMA面扫描形成元素分析图(Tb、Al、Ga、Co、B、CP、Nd、Cu、Zr等)，如图2所示。从图2可知，Tb等重稀土元素在主相外沿层形成富集壳层，而Zr等高温元素在晶界相中均匀分布，使得富钕相的B得到净化，从而更易生成四方相Nd 6Fe 13Ga等反磁相，两者共同提升了磁体的矫顽力。 Take the main and auxiliary alloy NdFeB magnet materials obtained in Example 1, and scan the FE-EPMA surface to form an elemental analysis diagram (Tb, Al, Ga, Co, B, CP, Nd, Cu, Zr, etc.), as shown in the figure 2 shown. It can be seen from Figure 2 that heavy rare earth elements such as Tb form a rich shell layer in the outer edge layer of the main phase, while high temperature elements such as Zr are evenly distributed in the grain boundary phase, so that the B in the neodymium-rich phase is purified, which makes it easier to generate tetragonal Nd 6 Fe 13 Ga and other diamagnetic phases, both of which together improve the coercivity of the magnet.

Claims (10)

  1. 一种主辅合金系钕铁硼磁体材料的原料组合物，其包括主合金原料和辅合金原料；其中，所述主合金原料包括以下组分：轻稀土元素LR，10.0～33.0mas％；LR选自Y、La、Ce、Pr、Nd的一种或多种；重稀土元素HR，0～20.0mas％；HR选自Gd、Dy、Tb和Ho中的一种或多种；M，0.1～5.0mas％；M选自Co、Cu、Al和Ga中的一种或多种；X，0.05～0.7mas％；X选自Zr、Ti和Nb中的一种或多种；B，0.94～1.1mas％；余量为Fe；其中，mas％是指组分在所述主合金原料中的质量百分比；A raw material composition of a main and auxiliary alloy system NdFeB magnet material, which includes a main alloy raw material and an auxiliary alloy raw material; wherein, the main alloy raw material includes the following components: light rare earth element LR, 10.0-33.0 mas%; LR One or more selected from Y, La, Ce, Pr, Nd; heavy rare earth element HR, 0-20.0 mas%; HR selected from one or more of Gd, Dy, Tb and Ho; M, 0.1 ～5.0mas%; M is selected from one or more of Co, Cu, Al and Ga; X, 0.05～0.7mas%; X is selected from one or more of Zr, Ti and Nb; B, 0.94 ～1.1mas%; the balance is Fe; wherein, mas% refers to the mass percentage of the components in the main alloy raw material;
    所述辅合金原料包括以下组分：轻稀土元素LR，0～30.0mas％；LR为Nd和/或Pr；重稀土元素HR，1～80mas％；HR为Dy和/或Tb；M，5.0～20.0mas％；M选自Co、Cu、Al和Ga中的一种或多种；X，3.0～12.0mas％；X选自Ti、Zr、Hf、Nb、W和Ta中的一种或多种；B，0～0.6mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比；The auxiliary alloy raw material includes the following components: light rare earth element LR, 0-30.0 mas%; LR is Nd and/or Pr; heavy rare earth element HR, 1-80 mas%; HR is Dy and/or Tb; M, 5.0 ～20.0mas%; M is selected from one or more of Co, Cu, Al and Ga; X, 3.0～12.0mas%; X is selected from one or more of Ti, Zr, Hf, Nb, W and Ta Various; B, 0-0.6 mas%; the balance is Fe; wherein, mas% refers to the mass percentage of the components in the auxiliary alloy raw material;
    所述辅合金原料在所述主辅合金系钕铁硼磁体材料的原料组合物中的质量百分比为1.0～15.0mas％。The mass percentage of the auxiliary alloy raw material in the raw material composition of the main and auxiliary alloy-based NdFeB magnet material is 1.0-15.0 mas%.
  2. 如权利要求1所述的主辅合金系钕铁硼磁体材料的原料组合物，其特征在于，所述主合金原料中总稀土含量TRE为26.0～40.0mas％，较佳地为29.0～32.0mas％，例如29.5mas％、30.5mas％或31.5mas％，mas％是指组分在所述主合金原料中的质量百分比；The raw material composition of main and auxiliary alloy-based NdFeB magnet materials according to claim 1, wherein the total rare earth content TRE in the main alloy raw material is 26.0-40.0 mas%, preferably 29.0-32.0 mas %, such as 29.5mas%, 30.5mas% or 31.5mas%, mas% refers to the mass percentage of the components in the main alloy raw material;
    和/或，所述主合金原料中，所述LR的含量为25.0～30.0mas％，例如25.2mas％、29.5mas％或30mas％，mas％是指组分在所述主合金原料中的质量百分比；And/or, in the main alloy raw material, the content of the LR is 25.0-30.0 mas%, such as 25.2 mas%, 29.5 mas% or 30 mas%, and mas% refers to the mass of the components in the main alloy raw material percentage;
    和/或，所述主合金原料中，当所述LR包含Nd时，所述Nd的含量为18.9～22.5mas％，例如22.125mas％；当所述LR包含Pr时，所述Pr的含量为6.0～7.5mas％，例如6.3mas％或7.375mas％；其中，mas％是指组分在所述主合金原料中的质量百分比；And/or, in the main alloy raw material, when the LR contains Nd, the content of the Nd is 18.9-22.5 mas%, for example, 22.125 mas%; when the LR contains Pr, the content of the Pr is 6.0～7.5mas%, such as 6.3mas% or 7.375mas%; wherein, mas% refers to the mass percentage of the components in the main alloy raw material;
    和/或，所述主合金原料中，所述LR包含Nd和Pr；更佳地，所述Nd的含量为22.125mas％，所述Pr的含量为7.375mas％；或者，所述Nd的含 量为22.5mas％，所述Pr的含量为7.5mas％；或者，所述Nd的含量为18.9mas％，所述Pr的含量为6.3mas％；其中，mas％是指组分在所述主合金原料中的质量百分比；And/or, in the main alloy raw material, the LR contains Nd and Pr; more preferably, the content of the Nd is 22.125 mas%, and the content of the Pr is 7.375 mas%; or, the content of the Nd is 22.5mas%, and the Pr content is 7.5mas%; or, the Nd content is 18.9mas%, and the Pr content is 6.3mas%; wherein, mas% refers to the composition in the main alloy The mass percentage in the raw material;
    和/或，所述主合金原料中，所述HR的含量为1.0～10.0mas％，例如1.5mas％或5.3mas％，mas％是指组分在所述主合金原料中的质量百分比；And/or, in the main alloy raw material, the HR content is 1.0-10.0 mas%, for example, 1.5 mas% or 5.3 mas%, and mas% refers to the mass percentage of the components in the main alloy raw material;
    和/或，所述主合金原料中，当所述HR包含Dy时，所述Dy的含量为1.0～5.0mas％，例如1.5mas％或4.3mas％；较佳地，所述主合金原料中，所述HR为Dy；所述Dy的含量较佳地为1.5mas％；当所述HR包含Ho时，所述Ho的含量为0.5～2.0mas％，例如1.0mas％；其中，mas％是指组分在所述主合金原料中的质量百分比；And/or, in the main alloy raw material, when the HR contains Dy, the content of Dy is 1.0-5.0 mas%, such as 1.5 mas% or 4.3 mas%; preferably, in the main alloy raw material , the HR is Dy; the content of Dy is preferably 1.5mas%; when the HR contains Ho, the content of the Ho is 0.5-2.0mas%, for example 1.0mas%; wherein, mas% is Refers to the mass percentage of the components in the main alloy raw material;
    和/或，所述主合金原料中，所述HR包含Dy和Ho；其中，所述Dy的含量较佳地为4.3mas％，所述Ho的含量较佳地为1.0mas％，mas％是指组分在所述主合金原料中的质量百分比；And/or, in the main alloy raw material, the HR contains Dy and Ho; wherein, the content of the Dy is preferably 4.3 mas%, the content of the Ho is preferably 1.0 mas%, and the mas% is Refers to the mass percentage of the components in the main alloy raw material;
    和/或，所述主合金原料中，所述M的含量为0.5～2.0mas％，例如0.88mas％、1.5mas％或1.65mas％，mas％是指组分在所述主合金原料中的质量百分比；And/or, in the main alloy raw material, the content of M is 0.5-2.0 mas%, such as 0.88 mas%, 1.5 mas% or 1.65 mas%, where mas% refers to the percentage of the components in the main alloy raw material. mass percentage;
    和/或，所述主合金原料中，当所述M包含Ga时，所述Ga的含量为0.2～0.4mas％，例如0.25mas％；当所述M包含Al时，所述Al的含量为0.01～0.1mas％，例如0.03mas％；当所述M包含Cu时，所述Cu的含量为0.1～0.25mas％，例如0.15mas％；当所述M包含Co时，所述Co的含量为0.5～1.0mas％；其中，mas％是指组分在所述主合金原料中的质量百分比；And/or, in the main alloy raw material, when the M contains Ga, the content of the Ga is 0.2-0.4 mas%, for example, 0.25 mas%; when the M contains Al, the content of the Al is 0.01-0.1mas%, such as 0.03mas%; when the M includes Cu, the content of the Cu is 0.1-0.25mas%, such as 0.15mas%; when the M includes Co, the content of the Co is 0.5-1.0 mas%; wherein, mas% refers to the mass percentage of the components in the main alloy raw material;
    和/或，所述主合金原料中，所述M包含Ga、Al、Cu和Co；其中，所述Ga的含量较佳地为0.25mas％，所述Al的含量较佳地为0.03mas％，所述Cu的含量较佳地为0.1mas％，所述Co的含量较佳地为0.5mas％，mas％是指组分在所述主合金原料中的质量百分比；And/or, in the main alloy raw material, the M contains Ga, Al, Cu and Co; wherein, the content of the Ga is preferably 0.25mas%, and the content of the Al is preferably 0.03mas% , the content of Cu is preferably 0.1mas%, the content of Co is preferably 0.5mas%, and mas% refers to the mass percentage of the components in the main alloy raw material;
    和/或，所述主合金原料中，所述X的含量为0.1～0.35mas％，例如0.11mas％或0.15mas％，mas％是指组分在所述主合金原料中的质量百分比；And/or, in the main alloy raw material, the content of X is 0.1-0.35 mas%, for example, 0.11 mas% or 0.15 mas%, and mas% refers to the mass percentage of the components in the main alloy raw material;
    和/或，所述主合金原料中，所述X为Zr或Ti；And/or, in the main alloy raw material, the X is Zr or Ti;
    和/或，所述主合金原料中，所述B的含量为0.97～0.99mas％，例如0.98mas％，mas％是指组分在所述主合金原料中的质量百分比。And/or, in the main alloy raw material, the content of B is 0.97-0.99 mas%, for example, 0.98 mas%, and mas% refers to the mass percentage of the component in the main alloy raw material.
  3. 如权利要求1所述的主辅合金系钕铁硼磁体材料的原料组合物，其特征在于，所述主合金原料包括以下组分：Nd，22.125mas％；Pr，7.375mas％；Ga，0.25mas％；Al，0.03mas％；Cu，0.1mas％；Co，0.5mas％；Zr，0.11mas％；B，0.98mas％；余量为Fe；其中，mas％是指组分在所述主合金原料中的质量百分比；The raw material composition of main and auxiliary alloy-based NdFeB magnet materials according to claim 1, wherein the main alloy raw material comprises the following components: Nd, 22.125mas%; Pr, 7.375mas%; Ga, 0.25 mas%; Al, 0.03mas%; Cu, 0.1mas%; Co, 0.5mas%; Zr, 0.11mas%; B, 0.98mas%; The mass percentage in the alloy raw material;
    或者，所述主合金原料包括以下组分：Nd，22.5mas％；Pr，7.5mas％；Dy，1.5mas％；Ga，0.4mas％；Cu，0.25mas％；Co，1.0mas％；Zr，0.35mas％；B，0.97mas％；余量为Fe；其中，mas％是指组分在所述主合金原料中的质量百分比；Alternatively, the main alloy raw material includes the following components: Nd, 22.5mas%; Pr, 7.5mas%; Dy, 1.5mas%; Ga, 0.4mas%; Cu, 0.25mas%; Co, 1.0mas%; Zr, 0.35mas%; B, 0.97mas%; the balance is Fe; wherein, mas% refers to the mass percentage of components in the main alloy raw material;
    或者，所述主合金原料包括以下组分：Nd，18.9mas％；Pr，6.3mas％；Dy，4.3mas％；Ho，1.0mas％；Ga，0.25mas％；Al，0.1mas％；Cu，0.15mas％；Co，1.0mas％；Ti，0.15mas％；B，0.97mas％；余量为Fe；其中，mas％是指组分在所述主合金原料中的质量百分比。Alternatively, the main alloy raw material includes the following components: Nd, 18.9mas%; Pr, 6.3mas%; Dy, 4.3mas%; Ho, 1.0mas%; Ga, 0.25mas%; Al, 0.1mas%; Cu, 0.15mas%; Co, 1.0mas%; Ti, 0.15mas%; B, 0.97mas%; the balance is Fe; wherein, mas% refers to the mass percentage of components in the main alloy raw material.
  4. 如权利要求1所述的主辅合金系钕铁硼磁体材料的原料组合物，其特征在于，所述辅合金原料中总稀土含量TRE为35.0～50.0mas％，较佳地为40.0～45.0mas％，mas％是指组分在所述辅合金原料中的质量百分比；The raw material composition of main and auxiliary alloy-based NdFeB magnet materials according to claim 1, wherein the total rare earth content TRE in the auxiliary alloy raw material is 35.0-50.0 mas%, preferably 40.0-45.0 mas %, mas% refers to the mass percentage of the components in the auxiliary alloy raw material;
    和/或，所述辅合金原料中，所述LR的含量为20.0～30.0mas％，例如25.0mas％，mas％是指组分在所述辅合金原料中的质量百分比；And/or, in the auxiliary alloy raw material, the content of the LR is 20.0-30.0 mas%, for example, 25.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material;
    和/或，所述辅合金原料中，当所述LR包含Nd时，所述Nd的含量为10.0～20.0mas％，例如15.0mas％；当所述LR包含Pr时，所述Pr的含量为15.0～25.0mas％，例如20.0mas％；其中，mas％是指组分在所述辅合金原料中的质量百分比；And/or, in the auxiliary alloy raw material, when the LR contains Nd, the content of the Nd is 10.0-20.0 mas%, for example, 15.0 mas%; when the LR contains Pr, the content of the Pr is 15.0～25.0mas%, for example 20.0mas%; wherein, mas% refers to the mass percentage of the components in the auxiliary alloy raw material;
    和/或，所述辅合金原料中，所述LR为Nd和Pr，所述Nd的含量为15.0mas％，所述Pr的含量为15.0mas％；mas％是指组分在所述辅合金原料 中的质量百分比；And/or, in the auxiliary alloy raw material, the LR is Nd and Pr, the content of Nd is 15.0 mas%, and the content of Pr is 15.0 mas%; mas% refers to the components in the auxiliary alloy. The mass percentage in the raw material;
    和/或，所述辅合金原料中，所述HR的含量为15.0～20.0mas％，mas％是指组分在所述辅合金原料中的质量百分比；And/or, in the auxiliary alloy raw material, the HR content is 15.0-20.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material;
    和/或，所述辅合金原料中，所述HR为Tb，所述Tb的含量为15.0mas％，mas％是指组分在所述辅合金原料中的质量百分比；And/or, in the auxiliary alloy raw material, the HR is Tb, the content of the Tb is 15.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material;
    和/或，所述辅合金原料中，所述HR为Dy，所述Dy的含量为20.0mas％，mas％是指组分在所述辅合金原料中的质量百分比；And/or, in the auxiliary alloy raw material, the HR is Dy, the content of the Dy is 20.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material;
    和/或，所述辅合金原料中，当所述M包含Ga时，所述Ga的含量为2.0～10.0mas％，例如5.0mas％；当所述M包含Co时，所述Co的含量为10.0～20.0mas％，例如15.0mas％；其中，mas％是指组分在所述辅合金原料中的质量百分比；And/or, in the auxiliary alloy raw material, when the M contains Ga, the content of the Ga is 2.0-10.0 mas%, for example, 5.0 mas%; when the M contains Co, the content of the Co is 10.0-20.0mas%, for example 15.0mas%; wherein, mas% refers to the mass percentage of the components in the auxiliary alloy raw material;
    和/或，所述辅合金原料中，所述M为Ga和Co；其中，所述Ga的含量较佳地为5.0mas％，所述Co的含量较佳地为15.0mas％，mas％是指组分在所述辅合金原料中的质量百分比；And/or, in the auxiliary alloy raw material, the M is Ga and Co; wherein, the content of the Ga is preferably 5.0mas%, the content of the Co is preferably 15.0mas%, and the mas% is Refers to the mass percentage of the components in the auxiliary alloy raw material;
    和/或，所述辅合金原料中，所述X的含量为4.0～10.0mas％，例如4.5mas％或5.0mas％，mas％是指组分在所述辅合金原料中的质量百分比；较佳地，所述辅合金原料中，所述X为Zr；And/or, in the auxiliary alloy raw material, the content of X is 4.0-10.0 mas%, for example, 4.5 mas% or 5.0 mas%, and mas% refers to the mass percentage of the components in the auxiliary alloy raw material; Preferably, in the auxiliary alloy raw material, the X is Zr;
    和/或，所述辅合金原料中，所述B的含量为0.3～0.6mas％，例如0.4mas％或0.5mas％，mas％是指组分在所述辅合金原料中的质量百分比；And/or, in the auxiliary alloy raw material, the content of B is 0.3-0.6 mas%, for example, 0.4 mas% or 0.5 mas%, and mas% refers to the mass percentage of the component in the auxiliary alloy raw material;
    和/或，所述辅合金原料在所述主辅合金系钕铁硼磁体材料的原料组合物中的质量百分比为2.0～5.0mas％，例如4.0mas％。And/or, the mass percentage of the auxiliary alloy raw material in the raw material composition of the main and auxiliary alloy-based NdFeB magnet material is 2.0-5.0 mas%, for example, 4.0 mas%.
  5. 如权利要求1所述的主辅合金系钕铁硼磁体材料的原料组合物，其特征在于，所述辅合金原料包括以下组分：Nd，15.0mas％；Pr，15.0mas％；Tb，15.0mas％；Zr，10.0mas％；B，0.5mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比；The raw material composition of main and auxiliary alloy-based NdFeB magnet materials according to claim 1, wherein the auxiliary alloy raw material comprises the following components: Nd, 15.0mas%; Pr, 15.0mas%; Tb, 15.0 mas%; Zr, 10.0mas%; B, 0.5mas%; the balance is Fe; wherein, mas% refers to the mass percentage of components in the auxiliary alloy raw material;
    或者，所述辅合金原料包括以下组分：Pr，25.0mas％；Dy，20.0mas％；Zr，4.5mas％；B，0.5mas％；余量为Fe；其中，mas％是指组分在所述辅合 金原料中的质量百分比；Alternatively, the auxiliary alloy raw material includes the following components: Pr, 25.0mas%; Dy, 20.0mas%; Zr, 4.5mas%; B, 0.5mas%; The mass percentage in the auxiliary alloy raw material;
    或者，所述辅合金原料包括以下组分：Pr，20.0mas％；Dy，20.0mas％；Ga，5.0mas％；Co，15.0mas％；Zr，5.0mas％；B，0.4mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比。Alternatively, the auxiliary alloy raw material includes the following components: Pr, 20.0mas%; Dy, 20.0mas%; Ga, 5.0mas%; Co, 15.0mas%; Zr, 5.0mas%; B, 0.4mas%; balance is Fe; wherein, mas% refers to the mass percentage of the components in the auxiliary alloy raw material.
  6. 如权利要求1所述的主辅合金系钕铁硼磁体材料的原料组合物，其特征在于，所述主辅合金系钕铁硼磁体材料的原料组合物包括主合金原料和辅合金原料；其中，所述主合金原料包括以下组分：Nd，22.125mas％；Pr，7.375mas％；Ga，0.25mas％；Al，0.03mas％；Cu，0.1mas％；Co，0.5mas％；Zr，0.11mas％；B，0.98mas％；余量为Fe；其中，mas％是指组分在所述主合金原料中的质量百分比；所述辅合金原料包括以下组分：Nd，15.0mas％；Pr，15.0mas％；Tb，15.0mas％；Zr，10.0mas％；B，0.5mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比；所述辅合金原料在所述主辅合金系钕铁硼磁体材料的原料组合物中的质量百分比为4.0mas％；The raw material composition of the main and auxiliary alloy-based NdFeB magnet materials according to claim 1, wherein the raw material composition of the main and auxiliary alloy-based NdFeB magnet materials comprises a main alloy raw material and an auxiliary alloy raw material; wherein , the main alloy raw material includes the following components: Nd, 22.125mas%; Pr, 7.375mas%; Ga, 0.25mas%; Al, 0.03mas%; Cu, 0.1mas%; Co, 0.5mas%; Zr, 0.11 mas%; B, 0.98mas%; the balance is Fe; wherein, mas% refers to the mass percentage of components in the main alloy raw material; the auxiliary alloy raw material includes the following components: Nd, 15.0mas%; Pr , 15.0mas%; Tb, 15.0mas%; Zr, 10.0mas%; B, 0.5mas%; the balance is Fe; The mass percentage of alloy raw materials in the raw material composition of the main and auxiliary alloy-based NdFeB magnet materials is 4.0 mas%;
    或者，所述主辅合金系钕铁硼磁体材料的原料组合物包括主合金原料和辅合金原料；其中，所述主合金原料包括以下组分：Nd，22.5mas％；Pr，7.5mas％；Dy，1.5mas％；Ga，0.4mas％；Cu，0.25mas％；Co，1.0mas％；Zr，0.35mas％；B，0.97mas％；余量为Fe；其中，mas％是指组分在所述主合金原料中的质量百分比；所述辅合金原料包括以下组分：Pr，25.0mas％；Dy，20.0mas％；Zr，4.5mas％；B，0.5mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比；所述辅合金原料在所述主辅合金系钕铁硼磁体材料的原料组合物中的质量百分比为5.0mas％；Alternatively, the raw material composition of the main and auxiliary alloy-based NdFeB magnet materials includes a main alloy raw material and an auxiliary alloy raw material; wherein, the main alloy raw material includes the following components: Nd, 22.5mas%; Pr, 7.5mas%; Dy, 1.5mas%; Ga, 0.4mas%; Cu, 0.25mas%; Co, 1.0mas%; Zr, 0.35mas%; B, 0.97mas%; The mass percentage in the main alloy raw material; the auxiliary alloy raw material includes the following components: Pr, 25.0mas%; Dy, 20.0mas%; Zr, 4.5mas%; B, 0.5mas%; the balance is Fe; wherein , mas% refers to the mass percentage of the components in the auxiliary alloy raw materials; the mass percentage of the auxiliary alloy raw materials in the raw material composition of the main and auxiliary alloy NdFeB magnet materials is 5.0 mas%;
    或者，所述主辅合金系钕铁硼磁体材料的原料组合物包括主合金原料和辅合金原料；其中，所述主合金原料包括以下组分：Nd，18.9mas％；Pr，6.3mas％；Dy，4.3mas％；Ho，1.0mas％；Ga，0.25mas％；Al，0.1mas％；Cu，0.15mas％；Co，1.0mas％；Zr，0.2mas％；B，0.97mas％；余量为Fe；其中，mas％是指组分在所述主合金原料中的质量百分比；所述辅合金原料 包括以下组分：Pr，20.0mas％；Dy，20.0mas％；Ga，5.0mas％；Co，15.0mas％；Zr，5.0mas％；B，0.4mas％；余量为Fe；其中，mas％是指组分在所述辅合金原料中的质量百分比；所述辅合金原料在所述主辅合金系钕铁硼磁体材料的原料组合物中的质量百分比为4.0mas％。Alternatively, the raw material composition of the main and auxiliary alloy-based NdFeB magnet materials includes a main alloy raw material and an auxiliary alloy raw material; wherein, the main alloy raw material includes the following components: Nd, 18.9 mas%; Pr, 6.3 mas%; Dy, 4.3mas%; Ho, 1.0mas%; Ga, 0.25mas%; Al, 0.1mas%; Cu, 0.15mas%; Co, 1.0mas%; Zr, 0.2mas%; B, 0.97mas%; is Fe; wherein, mas% refers to the mass percentage of components in the main alloy raw material; the auxiliary alloy raw material includes the following components: Pr, 20.0mas%; Dy, 20.0mas%; Ga, 5.0mas%; Co, 15.0mas%; Zr, 5.0mas%; B, 0.4mas%; the balance is Fe; wherein, mas% refers to the mass percentage of the components in the auxiliary alloy raw material; The mass percentage in the raw material composition of the main and auxiliary alloy-based NdFeB magnet material is 4.0 mas%.
  7. 一种主辅合金系钕铁硼磁体材料的制备方法，其包括以下步骤：A preparation method of a main and auxiliary alloy system NdFeB magnet material, which comprises the following steps:
    S1、将如权利要求1～6中任一项所述的主辅合金系钕铁硼磁体材料的原料组合物中的所述主合金原料和所述辅合金原料分别熔融后铸造，分别得主合金和辅合金；S1. The main alloy raw material and the auxiliary alloy raw material in the raw material composition of the main and auxiliary alloy-based NdFeB magnet materials according to any one of claims 1 to 6 are respectively melted and then casted to obtain the main alloy. and auxiliary alloys;
    S2、将所述主合金和所述辅合金分别氢破碎和微粉碎后混合，进行成型和烧结处理，即得所述主辅合金系钕铁硼磁体材料。S2. The main alloy and the auxiliary alloy are hydrogen crushed and finely pulverized, respectively, and then mixed, and subjected to forming and sintering treatment to obtain the main and auxiliary alloy NdFeB magnet material.
  8. 如权利要求7所述的主辅合金系钕铁硼磁体材料的制备方法，其特征在于，所述熔融在熔炼炉中熔炼，所述熔炼炉的真空度约为5×10 -2Pa，所述熔炼的温度为1300℃～1600℃，较佳地为1500℃～1550℃； The method for preparing main and auxiliary alloy NdFeB magnet materials according to claim 7, wherein the melting is performed in a smelting furnace, and the vacuum degree of the smelting furnace is about 5×10 -2 Pa, so The smelting temperature is 1300℃～1600℃, preferably 1500℃～1550℃;
    和/或，所述铸造的工艺为薄带连铸法、铸锭法、离心铸造法或快淬法；And/or, the casting process is thin strip continuous casting, ingot casting, centrifugal casting or rapid quenching;
    和/或，所述氢破碎的脱氢温度为400℃～650℃，例如500～620℃；And/or, the dehydrogenation temperature of the hydrogen fragmentation is 400 to 650°C, for example, 500 to 620°C;
    和/或，所述微粉碎在气流磨中进行；and/or, the micro-grinding is carried out in a jet mill;
    和/或，所述微粉碎在含氧气氛下进行；所述含氧气氛中氧含量较佳地为80ppm以下，更佳地为50ppm以下；And/or, the micro-pulverization is carried out in an oxygen-containing atmosphere; the oxygen content in the oxygen-containing atmosphere is preferably below 80 ppm, more preferably below 50 ppm;
    和/或，所述微粉碎后的粉末粒径为1～20μm；And/or, the particle size of the finely pulverized powder is 1-20 μm;
    和/或，所述成型为在压机中压制成为生坯；所述压机的磁场强度较佳地为0.5T～3.0T，例如1.0～2.0T；所述压制的压力较佳地为200～300MPa，例如260MPa；所述压制的时间较佳地为3～30s，例如15s；And/or, the forming is to press in a press to form a green body; the magnetic field strength of the press is preferably 0.5T to 3.0T, for example, 1.0 to 2.0T; the pressing pressure is preferably 200 ~300MPa, such as 260MPa; the pressing time is preferably 3-30s, such as 15s;
    和/或，所述烧结的温度为1000℃～1150℃，较佳地为1060～1090℃；And/or, the temperature of the sintering is 1000-1150°C, preferably 1060-1090°C;
    和/或，所述烧结的时间为4～20小时；And/or, the sintering time is 4-20 hours;
    和/或，所述烧结的气氛为真空或氩气气氛。And/or, the sintering atmosphere is vacuum or argon atmosphere.
  9. 一种主辅合金系钕铁硼磁体材料，其根据权利要求7或8所述的主辅合金系钕铁硼磁体材料的制备方法制备得到。A main and auxiliary alloy system NdFeB magnet material is prepared according to the preparation method of the main and auxiliary alloy system NdFeB magnet material according to claim 7 or 8.
  10. 如权利要求9所述的主辅合金系钕铁硼磁体材料，其特征在于，所述主辅合金系钕铁硼磁体材料包括主相和晶界相；其中，所述主相为核壳结构，所述核为LR 2T 14B，所述壳为HR 2T 14B；所述晶界相包括富钕相、XB 2相和R 6T 13M相；其中，R为LR和/或HR；LR选自Y、La、Ce、Pr、Nd的一种或多种；HR选自Gd、Dy、Tb和Ho中的一种或多种；M选自Cu、Al和Ga中的一种或多种；X选自Ti、Zr、Hf、Nb、W和Ta中的一种或多种；T为Fe和/或Co； The main and auxiliary alloy NdFeB magnet material according to claim 9, wherein the main and auxiliary alloy NdFeB magnet material comprises a main phase and a grain boundary phase; wherein, the main phase is a core-shell structure , the core is LR 2 T 14 B, and the shell is HR 2 T 14 B; the grain boundary phase includes neodymium-rich phase, XB 2 phase and R 6 T 13 M phase; wherein, R is LR and/or HR; LR is selected from one or more of Y, La, Ce, Pr, Nd; HR is selected from one or more of Gd, Dy, Tb and Ho; M is selected from one or more of Cu, Al and Ga one or more; X is selected from one or more of Ti, Zr, Hf, Nb, W and Ta; T is Fe and/or Co;
    较佳地，所述主辅合金系钕铁硼磁体材料中，LR为Pr和Nd；HR为Tb；M为Cu、Al和Ga；X为Zr；T为Fe和Co；Preferably, in the main and auxiliary alloy NdFeB magnet materials, LR is Pr and Nd; HR is Tb; M is Cu, Al and Ga; X is Zr; T is Fe and Co;
    较佳地，所述主辅合金系钕铁硼磁体材料中，LR为Pr和Nd；HR为Dy；M为Cu和Ga；X为Zr；T为Fe和Co；Preferably, in the main and auxiliary alloy NdFeB magnet materials, LR is Pr and Nd; HR is Dy; M is Cu and Ga; X is Zr; T is Fe and Co;
    较佳地，所述主辅合金系钕铁硼磁体材料中，LR为Pr和Nd；HR为Dy和Ho；M为Cu、Al和Ga；X为Ti；T为Fe和Co。Preferably, in the main and auxiliary alloy NdFeB magnet materials, LR is Pr and Nd; HR is Dy and Ho; M is Cu, Al and Ga; X is Ti; T is Fe and Co.
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CN115831519B (en) * 2023-02-14 2023-05-12 宁波守正磁电有限公司 Sintered NdFeB permanent magnet

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CN108389711A (en) * 2018-01-05 2018-08-10 宁波招宝磁业有限公司 A kind of preparation method of the Sintered NdFeB magnet with high-coercive force
CN111613403A (en) * 2020-06-01 2020-09-01 福建省长汀金龙稀土有限公司 Neodymium-iron-boron magnet material, raw material composition, preparation method and application thereof

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WO2011122667A1 (en) * 2010-03-30 2011-10-06 Tdk株式会社 Rare earth sintered magnet, method for producing the same, motor, and automobile
CN103103442A (en) * 2013-02-28 2013-05-15 包头稀土研究院 Method for preparing neodymium-iron-boron material through main-auxiliary alloy method
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